41 / 2018-08-15 16:04:36

Study on Electrical Aging Properties of Polyethylene Based Nanocomposite

nano-MMT

In-depth research on the electrical aging properties of polyethylene based on nano-MMT and SiO2 fillers has important physical significance for improving the reliable operation of electrical equipment based on polyethylene insulation. For this purpose, the AC breakdown test and polarized microscope differential scanning are used in this paper. Calorimetric and conductivity measurements were carried out on the electrical aging properties of polyethylene based on nano-MMT and SiO2. The study found that the effect of electric field will produce certain crystallinity and crystal structure of polyethylene with nano-MMT and SiO2 as filler. influences. Short-term electrical aging can increase the breakdown field strength of materials to a small extent; while long-term electrical aging can significantly reduce the breakdown field strength of polyethylene with nano-MMT and SiO2 as fillers, and cause an increase in dielectric conductivity. The doping of the nanoparticles will delay the performance degradation of the matrix material due to aging to some extent.